1.

Find the square root of following numbers by seq succesive subtraction:1. 492. 1213. 644. 169​

Answer»

ANSWER:

(I)..49-1=48

48-3=45

45-5=40

40-7=33

33-9=26

26-11=15

15-15=0

We subtracted seven time to GET 0

So, √49=7

(2)121-1=120

120-3=117

117-5=112

112-7=105

105-9=96

96-11=85

85-13=72

72-15=57

57-17=40

40-19=21

21-21=0

hence,we subtracted 11 TIMES to get 0

So,√121=11

(3)64-1=63

63-3=60

60-5=55

55-7=48

48-9=39

39-11=28

28-13=15

15-15=0

Hence, we subtracted 8 times to get 0

So,√64=8

(4)169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

Hence,we subtracted 13 times to get 0

So,√169=13


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